Disk plow and subsoiler



A. P. McKAY. msx PLow AND susolusn.

IIPPLICATION FILED SEPT. I5, |920.

A. P. MCKAY.

DISK PLOW AND SUBSOILEH.

APPLICATION FILED sEPT l5. 1920.

Patented Nov. 15, 1921.

7 SHEETS-SHEET 2.

` A. P. MCKAY.

DISK PLOW AND SUBSOILER.

APPLICATION FILED SEPT. 1.5, 1920.

Patented Nov. 15, 1921. L

7 SHEETS-SHEET 3.

A. P. McKAY..

DISK PLOW AND SUBSOILEH.

APPLICATION FILED SEPT 15,1920.

1 ,$97,434. 111611161 Nov. 15, 1921.

. 7 SHEETS-SHEET 4. T OB N N Q v o 1' NQ N N i A. P. McKAY.

msx PLow AND susons. APPLICATION FILED SEPT. l5, 1920. A l 1,397,434, Patented Nov. 15, 1921.

. l SHEETS-SHEET 5- lwllll A. P. VICKIW.v

DISK PLOW AND SUBSOILEH. APPucATloN FILED SEPT. l5. 1920.

rv n0. L ad 2 am 9 G 1 U wm w mm I E m 7 vmklHzlW mA um un A. P. McKAY.

DISK PLOW AND SUBSOILER. APPLICATION FILED SEPT. I5. 1920.

1,397,434. Patented Nov. 15, 1921.

7 SHEETS-SHED l` AUGUSTA. POSTELLE lloIAY, 0F ROME, G-EGRGI., ASSIGNOR T0 MCKAY DISK FLOJV CO., OF ROL'E, GEORGIA, A

COREORATIN 0F GEORGIA.

DISK PLOW AND SUBSOXLER.

Application filed September To @ZZ wwm t /mog/ concern? 15e it known that'I, AUG-nera ljosrnnnn MCKAY, a citizen of the United States, residing at Home, in the county or1 Floyd and State of Georgia, have invented certain new and useful Improvements in Disk Plows and Subsoilers; and I do hereby declare the tollowing to bea full, clear, and exact description ot the invention, such as will enable others skilled in the art to which it appertains to make and use the saine.

lVly present invention relates to an arrangement ol disks and subsoilers intended to be used as an attachment for tractors, and one of the special features or" the invention is that the plow and snbsoiler attacliment may be controlled by a single operator who rides upon the tractor, and who can periorm all the operations of coupling the attachment onto, or nncoupling it troni, the tractor, transporting the attachment 'iroin place to place by ineans oz the tractor, and operating the attachment in the field either for the ordinary plowing or 'for controlling the parts when meeting obstructions, all without requiring the single operator to inove from his seat on the tractor,

r1`he invention also relates to certain irnprovements in means whereby the disks and subsoilers may be elevated and lowered, both at the iront and rear ends, in order o raise the plows and snbsoilers ont of Contact with the soil, or to quickly raise saine when an obstruction is encountered, or to allow the saineto descend into the operative position.

'lhe invention further relates to means for controlling the automatic lift, and to various other details in construction and operation which will be hereinafter more fully described.

My present invention is `intended especially to provide certain improvements over the apparatus shown in n'iyearlier l?atents, No. 1,189,982, granted July 1, 1916, and entitled lmprovements in dislrplows, and No, 1,323,887, granted December 2, 1919, and entitled lrnprovernents in disk plows and sab- Soilers.

My invention will be more fully under stood after reference to the accompanying drawings, in which like parts are indicated Specification of Letters Patent.

Patented Nov. 15, 1221.

15, 1920. serial No. 410,563.

by similar reference symbols throughout the rseveral views, and 1n which Figure 1 is a perspective view of the atalong the line 3)-3 or Fig. 4;, and looking in the direction of the arrows.

Fig. 1- is a plan View oi the vparts showny in Fig. 3.

Fig. 5 is a detail showing` the coupling yoke for attaching' the disk plow and subsoiler attachment to the tractor.

Fig. 6 is a Vdetail,showing in plan the rear wheel and the pitinan for operating the saine, parts being broken away.

Fig. 7 is a sectional elevation, on a larger scale, along the line 7-7 of Fig. 4, and looking in the direction ol" the arrows.`

Fier, 8 shows a section Valong the line 8MS 7, and looking in the` direction of the arrows, parts being shown in elevation.

9 shows a section along the broken line 9-9 of Fig. '7, and looking in the direction of the arrows. y n

10 shows a section along the broken line 1^-1O olf Fig; 8, but on a larger scale, and shows the parts Vin the position assumed when the main trarne is in thev raised position as indicated in Figs, 2 and 7.

Fig. 11 is a similar view to 10, but shows the parts in the position assumed when the main trarne is lowered, and the disk plows and subsoilers are in the operative position; i

Fig. 12 shows a section feng the line 12-12 oil' Fig, 10, and lookingv in the direction of the arrows.

Fig. 13 shows a section ta ren along the line 12B- 13 cic Fig. 4i, and looking in the direction oi the arrows, the parts being shown on a larger vscale than inwFig, y

Fig. 141 shows a section along the line .lll-lll oit Fig.r 13, and looking inthe direc tion ol" the arrows.

roo

. Fig. `shows a central horizontal section through4 the bearing for one ofthe disk plows,l tlie'detachable plate ofthe disk plow being shown in dotted lines, and parts of the main frame being also indicated 'in dotted lines.

Fig. 15 shows a section through one ofY the plow beams and angle braces .along the lineA1G-16 of F ig. 2, and looking in the direction of the arrows.

Fig. 17 shows a side elevation of a kportion of one of the plow beams and the rods supporting the scraper, and illustrates the mode 0f attaching the scraper to the plow beam.

Fig. 18 shows a section alongthe broken line 18--18 of Fig. 17, and looking iii the direction of the'arrows, and

Fig. 19 isa detail showing a' perspective view of one ofthe resilient arcuate plates used in setting` the scraper rod at theproper.

angle. e, 1 Y i represents the tractor, and Brepresents the main frame of the attachment which is connected to the tractor by `the draft ark yrangementC. The complete attachmentis supported on vthree wheels, the V Vfront of furrow wheel D, the road wheel llfand the rear wheel F. The main frame carries thei disk plows G, the scrapers H and the subsoilers I. The wheels D and E support a truck.V

' frame K swiveled to the niain franieby means of the king bolt L. A

The draft attachment G comprises the tongue C with Va fastening device Preferably in the form ofla Ufshaped link o which may be attachedto the tractor with a coupling pin, orV in any" other convenient way. This tongue C. terminates in a yoke C2, which is Vhinged at c.. to the downwardlyand Vfor-V wardly projecting plates 7c ofthe truck Y frame K. Y

The forward part of the main frame Bv is provided with a bearing VplateV B Ywhich rests upon the upper portion `of the truck frame K which is swiveled onthe king bolt L, as .will be hereinafter more fully described. ,Y

The low beams B2 are attachedV to this plate as by means of. the angle irons Z) and bolts. as shown most clearly in Figs. Z and 3. The plow beams are preferably I-shaped in cross section, and theirheels are curvedand bent downwardly, as shown most clearly in Figs. 1 and 2. -v

In order to stiften the main frame, braces B3 are provided, shown most clearly in- Figs. 2 and 16, which braces are connected toene plow beam B2, as Ashown in Fig.'16, as by means of the angle irons or lisb'plates of and corresponding bolts, and these braces project laterally, as at b2, and` downwardly,

as at jbffand areV .pr-ovide-ddwitli-ib adapted to fit into the corresponding groove in the side of the opposite plowk beaimand the parts are then bolted together to form a rigid structure. beams the brackets G for the disks are attached, as' shown vmost clearly in Figs. 2 and 15. llach bracket is provided with laterally project-ing arms L having ribs g adapted to lit snugly into the groove in the corresponding plowl beam, as indicated in 15, and each bracket is also 1provided with a bearing face g2 adapted to engage the front edge ofthe plow beam to which it is attached oy oneor more bolts J. A single bolt would ordinarily be sufficient for each bracket G.

. Each bracket G is provided with acentral chamber into which. projects the stem of the journalfb'lock G2 to which the disk G is attached. This block is provided with cyli'. ,iV I drical surfaces g? for the roller bearings (is and G4, and the outer 'end is .screw-threaded as at go to engage the nut G7,'whi'ch engages the bearing ring Gand holds the block in place in Vits bearings. j l

The outer end of the opening` in the:

bracket G is closed by thescrew plug `and the inner edge of the saidbracket bears Vagainst'the packing GG, thus forming closed chamber which freely with oil if desired. 1

The outer face of the. bearinoblock is curved as shown .in Fig. 15, and is V,pro-

Vvided with the screw socketv g5, to engage the central screw bolt V,o7 of the disk, and i` th bolt holes y to engage the bolts Q9 of the disk, i

as shown in Figs'. 2.andV 15. This particular Varrangement provides rigid. connection between the disk bracket and the plow beam, and a strong and 1 durable anti-frictionbearing is vprovided for the rotary disks. The disks G may be applied to or removed from the block G2 whilewtlie.- other parts are still in place; or 'if V.desired the cap G5 may be removed and the nut G7 able Vattaching means for the scraper rod or handle shown in detail in Figs. 1f?, 18 VAand 19,'1n which H3 represents an arcuate plate made of resilient material, such as steel.

having diagonally disposed notches 17j; and if therein, as shownniore clearly in Fig. 19,

into which Vnotches the scraper rod H2 engages, as shown. inFig. 18. The opposite side of the scraper rod is engaged by the hook bolts H1* andll, see Figs. 17 and 18. and the free ends of'these hook bolts pass through the plate H6 andare screw threaded To the heels of the plowA may be supplied izo to engage the nuts ha and Iig, respectively. This plate HG is -on one side of the correspending` plow beam 12, while the arcuate plate H3 is on the opposite side of the plow beam, and by adjusting the position of the plate H3 and setting,v up on the nuts its and lr the angle of the rod H2 with the horizontal may beadjusted to the desired position.

The arcuate plate H3 will give a yielding` but secure support to the upper end of the scraper rod and will hold it fast against the forces tending to twist it in the horizontal plane.

lt will be seen that Vby loosening; up on either of the hooks Ht or H5 the plate H3 may be shifted so that the scraper may be readily adjusted to the desired position relative to the plow disk.

The subsoilers l carry standards l which are perforated as shown in Figs. 2 and l5.

Each standard ts in a groove z" in a block T2, which has a rib c' adapted to fit snugly in the groove in the face `of the plow beam, as shown most clearly in Fig. l5. The said block is preferably secured to the plow beam and to the adjacent bracket for the disk plow by means of the bolt JV already described and shown in Fig. l5. Each standard is held in place by one or more bolts l? provided with a corresponding nut or nuts 3. In practice a single bolt and nut willbe sufficient for each standard, `and thereby quicker adjustment may be secured for the standard referred to. Y

The block To carrying the rear standard is zgenerally similar to the other block I2 already described, but it is provided with a rearward extension o to which the bell crank lever M is pivoted as at m. The rear wheel F is journaled on the stub shaft F carried by the arm m of this bell crank lever, and to the opposite arm m2 the rear wheel operating rod or pitinan lt is pivoted, as shown in Figs. 2 and 6. This rod is bent outward, as at m?, to clear the edge of the rear disk plow and is connected, as at m4, to the cylinder M2, see Figs. 13 and 14. This cylinder is provided with an annular rib having internal screw threads m5 to engage the screw threads m of the rod M3, Vwhich rod passes through the closed cap m7 of the cylinder M2. The cylinder should be suppliedwith oil so that the screw operates in an oil bath.

This rod M3 passes through a sleeve O3, whose purpose will be hereinafter described, and is connected by a universal joint m8 to the rod M4 which is rigidly'attached to the rod M5, terminating in the hand crank m9. 'By turning this hand crank the screw M3 will be turned in the nut m5, which will rock the bell crank lever M and raise or lower the rear wheel F. This may be done by the 'operator of the tractor without necessitating his moving from the seat.

The pitinanl connecting the bell crank M with the hand crank m9 is bent so as to avoid. various parts of the apparatus, and the universal joint ma is located substantially below the axis of the kine; bolt L so that the truck frame K may be swung through Vthe requisite angle laterally without interfering in any way with the operation of this pitinan, either by hand as just described, or automatically as under the influence of the power lift, as will be hereinafter more fully described.

The road wheel inay be either lifted or lowered by hand or automatically, and for clearness of description the'hand operation will first be described.

N represents a rod whose front end, like the front end of the mdb/5, is journaled in the plate c2 `carried by the tongue C. This rod N carries at its forward end the hand crank n, and at its rear end it is connected to the coupling sleeve l which is connected by a universal joint n2, see Figs. 4, 7 and 9, which sleeve l is connected tothe rod N2 which passes through the sleeve Q3, which effects the automatic operation, as will be hereinafter more fully described.

This rod N2 projects into the closed cylinder N 3, and is provided at its rear end with screw threads n4 engaging' the screw threads a3 forined on the inside of the cylinder, as shown most clearly in Fig'. 9. This cylinder is supplied with oil so that the screw n4 operates in an oil bath. f

The cylinder N3 is provided with a trunu nion nf engaging the bearing o atthe end of the crank arm O, which arin is fast to the transverse shaft 0', see Figs.V 3, 7 and 8, and this shaft has a downwardly proectinn'crank arm l?, which is provided with a bearing P in which the stub shaft in is journaled.. This stub shaft is splined to the hub e of the road wheel FJ, and the stub shaft turns with the road wheel.

t will be obvious that if the arrn P, which is fast to the shaft O, is rocked that the road wheel E will be raised or lowered relative to the truck fraine, or what amounts to the saine thing the truck frame and main frame will be lowered or raised dependent upon the rockingV movement of the crank arni P. it willbe seen that by rotating' the..

hand crank n the screw N2 is rotated, which causes the cylinder N3 to rock the crank arm 0 and with it the shaft O and the crank arm P, thus raising or lowering the road wheel.

llt will be seen that either the rear wheel F or the road wheel Fi may be raised or lowered relative to the inain frame by operating' the corresponding screws M3 and N2 respectively, and this without in any way affectinn' the automatic lift mechanism which will be hereinafter described.

Q represents4 atransverse shaft journaled,

llO

like the shaft O', in the truck frame K, and this shaft@ hasfa downwardly depending arm ed to which the stubshaft D is attached, on which stub shaft thehub CZ of the furrow wheel D is journaled. 1t will .bel

seen thatv rocking the shaft Q will raise or Y lower the furrow wheel D relative to the main frame, and this is'accoinplished auto- Inatically by the power lift, as will be hereinafter described. 4

1t will belnotedA in Fig. 2 that the furrow wheel when in the lower position, corresponding to. the lifting of the plow attachment out of engagement with theground, is

The control ofthe automatic operation ofV` thepow'er lift will now be described.

1n additionto the crank arm Othevshaft O carries a second-arm O2, see Figs. 8, 13 and 14, which arm has a bearing at its'lower 'end to engage the'trunnion 03 ffnet toV the sleeve03, which sleeve isrslidably mounted `on thescrew M3, but is adapted to bring up against the collar m9 on the screw M3 as shown in Fig. 1li. Thuswhen the shaft O" is rocked in a' clockwise direction fromv the position shown'in `Fig. 13 thejarm 02" will e pull on the rod M and will lift the rear wheel `F.

Ina `similar wayT theshaft Q, in addition to the arm Q1* to which the furrow wheel is., journaled, carries 'a second arm @2, see Figs.

7 andi?, which has a Vjournal bearing at its lower end for the trunnion ([3 of the sleeve f Qwhich sleeve is slidably mounted on the,

sciew N2, but brings up againstthe collar nf on 'the vsaid screw, as shownrin Fig. 9. This screw N2 is free to slide in one direction through the sleeve @ibut is prevented from sliding in the other direction by the set collar al?, and, consequently Athe screw N? Vmay be drawn by hand through this sleeve Q3 in one direction as in operating by hand, but cannot `be moved in the opposite direction without rocking the arm Q2.

The automatic'operation of --the lift `ies/controlled by the operating lever -R which is located within easy reach `of ,the operator on-the tractor. l This lever is connected by the rod R to the lever R2', which is pivoted as at r on the crank l?, in which theproad wheel shaft E is journaled. This lever B2 is connected bythe link Rt tothe opposite lever Y?, which is alsopivoted as at r on the crank P., and the two levers R2 and R3 are provided with inwardly projecting lugs i12-andra, respectively, see Figs. 2, 8, 10 and 11.

The cranl P is` provided witha cylindripower calhousing P0 having slots 292 and 03, regis-r tering, respectirely.V with the lugs r2 and r3.

Yofthe levers R2 and R3.

The shaftv E is. reduced, as at E2, and

projects through the center yof the'h'ousing PP and ca ries a ratchet wheel E0. The cap Filis loosely mounted on the reduced porm tion' F2 of the shaft, and -is held in place by the nut E4 secured on the screwlthreaded `end E3 of said shaft, and the cap V" is mounted over'the end E? and is screwed on the boss of the cap W'. This cap W is provided with a lug w, having the pin w con; nected by the link X to the truck frame K, `as sliowninost clearly in Figs. 3, 1f andv 12.

The yoke VT is slidably mounted in the housing'P?, and is provided withsa central openingTO, see Figs. 11 and 12, which oentral opening incloses the ratchet "wheel E0.

The operation ofthe automatic vpowerflift` is very siinilar'to that illustrated anddes scribed in rmy Patent No.1,323,887 of May Y 20, 1919, already referred to.

The yoke T is preferably made oftwoA plates T andfl2 fastened together with bolts, and each provided with'oppositely disposed lugs t2 and #which areslidably held between the lugs @U2v and w3 projeeting'in# w ward from the cap W. Mounted between these plates is the pawl t having its stemt' securely bolted between the plates, as shown v most clearly in Fig. 12." This pawl isy normally held out' of engagement with they ratchet wheel by means of the springs U* attached to the cross-,head U, held between the platesfi"` and T?, andgthese springsalso` 1tY will be noted engagementv with VVthe slot 79?', as shown in Fig. l10,the lugs 'maand consequently the tliatfwhenzthislug t2 is in` cap W', will beheld againstturning in the housing P0; When thisi lugt2` ispressed inward, which is accomplishediby pulling Von the lever l?. andfcausing the lug r2 to press against the lug t2, the yoke T, andwithV4 it the cap W. will he freer'to rotate Vin the hous-- e ing P". 'fit this time thefsprings U will Vbe held in the vstretched positionshown in 11. When ytheyolrefl.is* pressed in; ward 'tliefpawlt will engagefthe ratchet wheel F0, aiidif tlie'roadwheel is in niotion itwill rotatethe cap W through an` angle, causingv the voire Tr toV assumethe position Vreached in-Fig. 11,` whichv indicates the liniit of travel ofthe cap.

New if the lever R isreleased, Vthe springsy U will cause the lug-'t2 to bear against/the lug r3 on the lever R3, which inoves siniul-V Ytaneously'with the lever 11i-andthe springs Ue will restore the VleversRt7 R2 andR to the initial. positionfat which time the sha-ftrEQ;v

-will be in thev raised-position,A and corre# spondingly the. main frameof the imple-l ment will bev in the lowered position and the roar, wheel will be free te rotate.

llow if it is desired to lift the main frame, pull on the lever R which will cause the lug r3 to press in the lug` 252, as shown in Fig. ll. This will cause the pawl tito engage in the ratchet wheel lilo and the road wheel will be locked to the cap W, and the turning of this cap will cause the link X to push the crank P back to the position shown in Figs. 7 and l0, the road wheel is lowered, and consequently the main frame of the implement is raised, lifting the disk plows and subsoilers out of the soil.

lt will be seen that the rotation of the shaft O, under the action of the power lift mechanism just described, will not only tend to raise or lower the road wheel E, but will also simultaneously raise or lower the furrow wheel D and the rear wheel F; if the angular motion of this shaft O rocks the arm .see Figs. 2, 3, 7 and 9, which causes the parts N3 and N2 to pull on the sleeve Q3 and rock the arm Q2, thus raising or lowering the furrow wheel. The same motion of the shaft 0 will cause the arm' 02 to pull on the sleeve 03. which will cause the rod 4lli3,`sleeve M2 and rod M to rock the bell crank lever M and raise or lower the rear wheel F.

rlhus it will be seen that if the main frame is in the raised position shown in Fig. 2 a

simple pulling on the lever R will cause the power lift to'lower the mainframe `by raising` all of the wheels relative to said frame. lf the frame is in the lowered position pulling` on the lever R will cause the power lift to force the wheels downward, thus lifting the frame and withdrawing the disk plows and subsoilers from the soil. This automatic action ofthe power lift is effected for alternately raising 'or lowering the main frame by a simple pull on,` the operating lever R and releasing said lever, when the automatic mechanism will do the` rest.

lt will be noted' that `the rear wheel is not free to ,swing laterally, but the guiding and turning of the machine is eiiected by4 rotating the front truck about the king bolt L. The truck frame K is of'any suitable reinforced construction, and is preferably provided with a top bearingplate K', which bears against the plate B of the main frame. This truck frame .is tied down to themain frame by means of a saddle plate Y and bolts L and Z; spacing washers y and y being provided on said bolts so that the plate i can be turned freely through the desired angle beneath the plate B4', as shown in Fig. 13. By preventing the rear wheel from swinginglaterallvthe rear end of the plow is heldin direct alinement on hillsides, securing Vuniform width of furrow lither in plowing uphill ordownhill. When the rear wheel hada lateral swing, there was found to be a tendencyef t e rear end of the plow to slip downhill, producing irregular widths of furrows.

rlhe operation of the device is as fol-- lows Suppose the parts to he in the position shown in Fig. 2, with the subsoilers clear of the ground, the operator backs the tractor up and couplesit onto the implement and drags the same to the field where the implement is to be operated. Before starting to plow the operator pulls the lever R, causing the road wheel to operate the automaticlift to lift all three wheels, or, what amounts to the same thing, allows the mainframe `carrying the plows and subsoilers to Vdrop by gravit-y to the operative position. After beginning the plowing if it is found that the plows are not cutting deep enough, the depth of the furrows may be increased by turning the hand cranks n and m, which are also in convenient reach of the seat. lf itis found that the plows are plowing` too deep, the depth may be decreased by turning the same cranks in the opposite direction.

lf an obstruction is seen, such asastone or stump, or ditch, the plow may be lifted over these obstructions by pulling on the power lift lever'lt which' automatically lifts the plow over the obstruction. lf the plow encounters some hidden obstruction, the tractor may be reversed 'and the plow pushed backward a few feet after which the power lift lever is pulled again and the tractor is started; the automatic power lift lifts the plow over the obstruction after which another pull on the same power lift lever automatically drops the plow backin the plowing position.

When the end of the furrow is reached, the power lift levervis again pulled, thereby automatically lifting' the plow out of the ground while the implement isbeing turned.

The foregoing depth adjustment applies to the plow frame as a whole, and there is a separate adjustment vfor the subsoilers. The subsoilers preferably project at a more or less depth belowthe bottom of the cor-` responding disks and their standards may be adjusted by taking the nut ofi the bolt l and removing the bolt and vraising,` or loweringthe standard to the desired position. j lf it is found that the front disk and subsoiler are cutting` deeper than the. rear disk and subsoiler, this `may be corrected by turning the handV crank m9 and raising or lowering the rear wheel F. y

ln doing shallow plowing and covering trash, the Scrapers must be lowered to a point against the surface fof the corresponding disks because the disks do not dig deep enough into Athe 4ground yfor the Scrapers to engage the dirt and cover the trash. 4`The rio scrapervserves as a mold'board for the disk and covers the trash. It'also serves to ulverize kthe dirt turnedrup by the disk. esides the simpleV function of scraping off the dirt, the scrapers have the important.

. function of turning over the earth which is means of the attachments shown in Figs.,V

17 to 25, ashereinbefore fully'described.

Therplow `beams maybe quickly and conveniently assembled bythe nut: and bolt arrangements shown. g

Y It will be noted that the 4heavy coil spring D tends to draw the furrow'wheel to the lifting position and so lessens the Vpower required to operate the screws in vlifting the frame. v

The weight ofthe main frame'aiid the parts carried therebyvwill tend to facilitate the lowering of the parts whether operated by hand--orvby thepower lift. Y In order to facilitate the-operation of the handlever It ja coil spring under` compression is provided at the forward end of the rod RQ-as shown at S in Figs. 2` and 4t, so

Y that when `the lever is thrown if the pawl does not catch at once in the ratchetwheelthe spring. would throw it into engagementyV tor, and that aV single man can operate the implement. A t Y Itwill be noted on an inspection o f Ifigf l 'i that none of the parts of the implement reachesup-as high at thetop of the tractor, and theimvplement maybe operated 'in orchards'or under trees having low :branches Without anygdanger of thev operation of the Vdevice being affected -by striking such decreased and yetcome withinthescope of.V

my invention. v

' Furthermore, if

Y attachment maybe'omitted either temporarily orpermanently, leaving-the `disk plows to operatealone.V

It will be obvious that various inodifica-V i tions might bel `made' infth'e herein `described vit is desired the subsoiler apparatus,V and in the. construction, combination and varrangement of parts which could be used without departingfro'm the spirit of my invention, and I do not mean to limit the invention to. such details except? as particularly ,pointed out in the claims.'

Having thus described myinvention what I claim and desire to secure by LettersV Patent ofthe UnitedV States is l. Apparatus of the character described,v

comprising a mainframe, a rear wheel pivoted thereto, Vplows carried by `said -main frame, a truck frame pivoted to and'supporting said main frame near its forward Y end, a road wheel and a furrow wheel jour 1 naled beneath and supporting said truck 'frame and thereby supporting the forward end of saidk main frame, screws operable Vfrom the front end of the truckjframe for raisingnnd lowering -by hand said rear wheel and'said road wheel, means for simultaneously-'raising and lowering allthree of said wheels relative tosaidfmain frame, and means operable from the front end of said truck frame for throwing said first mein`A` ition'ed means into'and out of operationwhen desired.

a rear wheel-:journaled toV one farm ofr'said lever,:plows `carried bysaid mainframe, a'.

truck frame pivoted toand'supporting said main frame near its forward e1id,-a'.road wheel and afurrow wheel gournaled beneath and supportingsaid truck frame and vthe v forward end offsaid mainframe, a pitman connected to said-bellcrank lever and op.- erable from `the front end'of the truck frame for rockingsaid bell crank lever,thereby raising and loweringQ-byrhand said rear wheel, and asecond screw and'mechanism .operated thereby, alsofoperablefrom'v the front end of said truck frame for raising and lowering said'roadwheel.

8.*Apparatus of fthe character described, comprising a'main frame,la bell crank lever a rear wheel journaled to one arm of said lever, plows carriedv by saidmain'frame, a

Vtruck frame pivoted to andvsupporting said main frame near its .forward end, a 'road Y pivoted to .the .rear endof 'said1 main frame,

wheel and afurrow wheel journaled beneath and supporting lsaid* truck frame and the forward .end of said'main frame, a'pitman connected vto said bell crank lever and oper- Y front end of saidrtru'ck "frameforvraising and Vlowering said road wheel,with means forfsiinultaneously raising and lowering fall 'threefof ASaid' wheelsfrelative .to said main,V

frame, and means operable from the front end of said truck frame for throwing said first mentioned means into and out of operation when desired.

4, Apparatus of the character described, comprisingr a main frame, a bell crank lever pivoted to the rear end of said main frame, a rear wheel journaled to one arm of said lever, plows carried by said main frame, a truck frame pivoted to and supporting said main frame near its forward end, a road wheel and a furrow wheel journaled beneath and supporting said truck frame and the forward end of said main frame, a pitinan connected to said bell crank leverand operable from the front end of the Vtruck frame for rocking said bell crank lever, thereby raising and lowering by hand said rear wheel, said pitman being,provided with a universal joint located below and near the pivot center of said truck frame, with a screw in rear of said joint, and a cylinder forming part of said pitman provided with a nut on its interior engaging said screw.

5. Apparatus of the character described, comprising` a main frame, a bell crank lever pivoted to the rear end of said main frame, a rear wheel journaled to one arm of said lever, plows carried by said main frame, a truck frame pivoted to and supporting said main frame near its forward end, a road wheel and a furrow 'wheel journaled beneath and supporting said truck frame and the forward end of said main frame, a pitman connected t0 said bell crank lever and operable from the front end of the truck frame for 'rocking said bell crank lever, thereby raising and lowering by hand said rear wheel, said pitinan being` provided with a universal joint located below Vand near the pivot center of said truck frame, with a screw in rear of said joint, and a cylinder forming part of said pitinan provided with a nut on its interior engaging said screw, and a second screw and mechanism operated thereby, also operable from the front end of said truck frame for raising and lowering said road wheel.

6. Apparatus of the character described, comprising a main frame, a bell crank lever pivoted to the rear end of said main frame, a rear wheel journaled to one arm of said lever, plows carried by said main frame, a truck frame pivoted to and supporting said main frame near its forward end, a road wheel and a furrow wheel journaled beneath and supporting,r said truck frame and the forivard end of said main frame, a pitman connected to said bell crank lever and operable frorn the front end of the truck frame for rocking said bell crank lever, thereby raising' and lowering by hand said rear wheel, said pitinan beingprovided with a universal joint located below and near the pivot center of said truck frame, with a screw in rear of said joint, a cylinder form` ing part of said pitman providedwith a nut on its interior engaging said screw, and a second screw and mechanism operatedthefeby, also operable from the front end of said truck frame for raising' and lowering` said road wheel, with means for simultaneously raising; and lowering all three of said wheels relative to said main frame, ane means4 operable from the front end of said truck frame for throwing said first mentioned means into and out of operation when desired.

7. Japparatus of the character described, comprisingv a mainframe, a bell crank lever pivoted to the rear end of said main frame, a rear wheel journaled to one arm of said lever, plows carried by said main frame, a truck frame pivoted to and supporting said niaiii rame near its' forward ends, a road wheel and a furrow wheel journaled beneath and supporting said truck frame, a pitman connected to the said bell crank lever and provided with a hand crank operable from the front end of the trunk frame for rocking said bell crank lever, thereby raising and lowering by hand said rear wheel, said pitinan being provided with a universal joint located below andV near the pivot center of said truck frame, with a screw in rear of said joint, and a closed cylinder adapted lto contain `oil forming part of said pitinan` provided with a nut on its interior engaging said screw.

8, Apparatus of 'the char eter described, (':pniprisinej niain frame, a bell crank lever pivote-d tothe rear end of said inain frame, a

rear wheel journaled to one arm of said lever, plows carried by said main frame, a truck frame pivoted to and supporting said main frame near its forward end, a road wheel and a furrow wheel jouinaled beneath and supporting said truck frame, a pitinan connected to said bell crank lever and provided with a hand crank operable from the front end of the truck frame for rocking; sail bell crank lever, thereby raising and lowering; by hand said rear wheel, said pitnian being; provided with a universal joint located below andA near the pivot center of said truck frame, with a screw in rear of said joint, a closed cylinder adapted to contain oil forming part of said .pitman p.ro vided with a nut on its interior engaging said screw, and a second screw and closed Y cylinder and mechanism operated thereby, with a hand crank operable from the front end of said truck frame for raising and lowering said .road wheel.

9. Apparatus of the character described, comprising a main frame, a bell crank lever pivoted to the rear end of said main frame, a rear wheel joiirnaled to ene arm of said lever, plows carried by said main frame, a truck frame pivoted to and supporting said main freine near its forward end. a road wheel and a furrow wheel j ournaled beneath and supporting saidtruck frame, a pitman connected to said bell crank lever and Vpro-` vided with a hand-crank operable from the front endof the truck frame for rocking said=bell crank leve-r, Vthereby raising and Vlowering by hand said' rear wheel, said pitma-n being provided with a universal joint located below and knear the pivot center of said truck frame, with a screw in rear of said joint, a cylinder forming part of said pitinan provided with av nut on its interior engaging saidscrew, aisecond screw with its `closed cylinder and mechanism operated "thereby, with a secondhand crank also operable-from the front end of said truck frame, for raising andlowering said road wheel, and meansl for simultaneously raising andloweringlall three of said wheels relative to said 'main frame7 and means'operable from the front end of said truck frame for throwing said first mentioned means intoand out .of operationwhen desired.

`and ,supporting saidV truck frame and the forward end of said main frame, and a bent pitman `connected to vsaid bell crank lever and terminating at its front end in a hand crank operable from Vthe front end of the truck frame for rocking said bell crank `lever, thereby raising and lowering by hand said rear wheel. Y 'y 11.V Apparatus ofthe character described,

comprising a main frame, afbell crank lever -f pivoted Vto the rear end of said main frame. a rear wheel )o urnaled toene arm of .said lever, plows carried bysaid main frame near its forward end, a road wheelfand a flir` row wheel `J ournaled beneath and support- Ving saidtruck frame and the forwardend of said main frame, a bent pitma-n connected to said ybell vcrank leverand terminating` at its frontend in a hand crank operablefrom' the front end of the truck frame for rocking said bell 'crank lever, -therebyraising and lowering said `rear wheel, withineans for simultaneously "raising Vand lowering all threevof said wheels relative to Ysaidv main frame, and means operable from they front v end ofsaidftruck frame for thrcwingsaid rstinenticnedineans into and outAo'f-.opera-V 'tion when desired. Y i Y ,12. 'Apparatus of the character described, ycomprising Va main' frame, a lrearwheel pivoted thereto, plows carried by said main frame,` a truck frame pivoted to and supporting said main 'frame near its forward end, aiioad: wheel and a furrowxwheel Vjournaled *beneath i and supporting said truck i Y rameva'nd thereby: supporting the 'forward end ofsaid mainfraniaa lcoil springunder `tension normally'drawingsaid `furrow vwheel `to .the lowered position,screws operable frointhe `front end `of thetruck iframe for 5 `raising and lowering by Vhand said rear wheel and said. road wheel, mechanism *for simultaneously raising andl lowering all 'three of said wheels. relative to 4said main frame, Va lever operable' fro-in fthe front end of'said trucliframe, andl means controlled byv said lever for'thi'owing vsaid mechanism into andout ofoperation when desired.

inneusriiy ros'rELLE MCKAY, c 

